Reportage in a snoezelen room in Liège. Mony, 85, who has Alzheimer's disease, moves around in this multi-sensory environment, which is both soothing and stimulating, with Marc Thiry, a physiotherapist specialising in psychomotor education. Professor Thiry has been following Mony since her disease was diagnosed 5 years ago. By stimulating the senses, these rooms allow people with Alzheimer's, who, despite their disease, maintain a sensorial memory, to lower their anxiety levels. These rooms are as beneficial to the patients as to the medical staff, allowing a privileged relationship to be established between the two, and setting up means of communication other than speech. This room is equipped with a liquid oil disc lamp that has a relaxing, and even hypnotic effect, and a water bed heated to 37°c that plays music.